Silicosis stalks workers in WB stone crusher units | kolkata . Oct 1, 2013 Most of the residents of these poverty stricken villages in West Bengal are suffering from silicosis, a chronic lung disease, caused by breathing bits of silica dust. Get Price; West Bengal. SAISHA STONE CRUSHER LIMITE. 2/6/2006. 29 U99999WB2006PLC1070. SUVIDHA PLACEMENTS ..